Ingredient review
Rice SH-Polypeptide-9 Dimer
INCI: Rice SH-Polypeptide-9 Dimer
A gentle peptide that may help firm skin and soften lines, with low irritation risk.
In plain English
This is a lab-made peptide inspired by rice proteins. Peptides are short chains of amino acids that act like messengers for your skin. This one is designed to encourage your skin to produce more collagen and elastin, which are the building blocks that keep skin plump and springy. Think of it as a gentle signal that tells your skin to stay firm and smooth.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is useful, but some claims depend heavily on the formula.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- semi synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Rice SH-Polypeptide-9 Dimer is generally a lower-concern ingredient when the full formula suits your skin.
Plain-English read
Treat this as a practical screening step before you compare products that contain this ingredient.
- Step 1Start with the score, then check the irritation and clogging risk before judging Rice SH-Polypeptide-9 Dimer.
- Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
- Step 3If a product stings, breaks you out, or worsens irritation, judge the finished formula and stop using it even if the ingredient scores well.
Score terms in plain English
Irritation risk
lowLess likely to sting, burn, or bother most users, though sensitive skin can still react.
Clogging risk
lowLess likely to feel heavy or contribute to clogged pores for most skin types.
Evidence level
moderateThere is useful support, but formula details and claim strength still matter.
What it is
A synthetic dimer peptide (two peptide chains linked together) derived from rice protein sequences. It is produced through biotechnology to mimic the skin-supporting properties of natural rice proteins.
How it works
When applied topically, the peptide is thought to bind to skin cells and stimulate collagen and elastin synthesis. This can help improve skin firmness and reduce the depth of fine lines over time. It also has antioxidant properties that help protect skin from environmental stress.
Pros
Gentle on skin
Unlike some anti-aging ingredients (like retinol), this peptide is unlikely to cause redness, peeling, or irritation, making it a good option for daily use even on sensitive skin.
Supports collagen naturally
Instead of forcing exfoliation, it works by signaling your skin to produce more of its own collagen, leading to gradual, natural-looking firmness improvements.
Cons and cautions
Subtle results
Peptides like this one typically require consistent use over several weeks or months to see visible changes, so it's not a quick fix for deep wrinkles.
Less research than some peers
While promising, this specific peptide has fewer published clinical studies compared to well-known peptides like Matrixyl, so the evidence base is still building.
Best for
- Anyone looking for a gentle anti-aging ingredient
- People with sensitive or reactive skin who want to avoid stronger actives
Use caution if
- Those seeking immediate, dramatic results (peptides work gradually)
Usage tips
Safety summary
Rice SH-Polypeptide-9 Dimer is considered safe for cosmetic use. It has low irritation and sensitization potential, and no significant safety concerns have been reported in available literature or regulatory reviews.
Research notes
Research on this specific peptide is limited but supportive. Studies on similar rice-derived peptides show potential for collagen stimulation and antioxidant activity. More human clinical trials would strengthen the evidence base.
Common label clues
- Typical concentration
- 0.1% to 1%
- Regulatory status
- Approved as a cosmetic ingredient in the EU, US, and other major markets. No specific restrictions apply at typical use levels.
- Common uses
- Anti-aging serums, Firming creams, Eye treatments
- Environmental note
- Produced via biotechnology, which generally has a lower environmental footprint than extraction from natural sources. No known sustainability concerns.
Good to know
- This ingredient is often found in high-end anti-aging serums and eye creams.
- It is water-soluble, so it works well in lightweight, gel-based formulas.
Common questions
What is Rice SH-Polypeptide-9 Dimer in beauty products?
This is a lab-made peptide inspired by rice proteins. Peptides are short chains of amino acids that act like messengers for your skin. This one is designed to encourage your skin to produce more collagen and elastin, which are the building blocks that keep skin plump and springy. Think of it as a gentle signal that tells your skin to stay firm and smooth.
What does Rice SH-Polypeptide-9 Dimer do in a beauty product?
When applied topically, the peptide is thought to bind to skin cells and stimulate collagen and elastin synthesis. This can help improve skin firmness and reduce the depth of fine lines over time. It also has antioxidant properties that help protect skin from environmental stress.
Is Rice SH-Polypeptide-9 Dimer safe for most people?
Rice SH-Polypeptide-9 Dimer is considered safe for cosmetic use. It has low irritation and sensitization potential, and no significant safety concerns have been reported in available literature or regulatory reviews.
Who should be careful with Rice SH-Polypeptide-9 Dimer?
Those seeking immediate, dramatic results (peptides work gradually)
Research sources
Ingredient reviews are educational and are not medical advice. Patch test new products and ask a licensed clinician about persistent irritation, allergies, pregnancy-specific questions, or diagnosed skin conditions.